My youngest LOVES science experiments and creates her own all of the time. She simply grabs a glass/vase/whatever else is handy and then fills it with random things she finds around the kitchen and pantry.
From cake sprinkles to dish soap, hot sauce and snow cone syrup, the gal throws it all in there. Then she’ll cover it with a napkin and rubberband and let it sit.
Days, weeks, months later she checks on her concoctions. In my mind, this is a pretty gross hobby, but I have to give her credit for creativity. Plus, science was always my worst subject. Maybe she’ll be more fortunate in that department. Who knows what she’ll create?!